Maik Hoepfel
65ec4a47d7
Fix ImageInput instead of re-binding image formset
@mbertheau raised a good point that rebinding the image formsets as
added in 0b373df hides any errors in the image formset.
0b373df5ab (commitcomment-5368878)
This fix undoes that change and instead alters behaviour of the
ImageInput widget to not display images that were never persisted to
disk.